搜尋結果
2022年12月5日 · 2022年12月5日. 在 新文章 0 comments. 美國聯邦貿易委員會 （Federal Trade Commission，FTC）是美國著名的獨立政府機構，在國際上從事商業行為的人應該耳熟能詳。. 該機構成立宗旨有二：. 保護消費者. 消除壟斷商業行為. 如果你正考慮購買一顆 實驗室培育鑽石 ，積極的 ...
美國寶石協會：由幾位獨立珠寶商和美國寶石學院 (GIA) 創始人於 1934 年成立的專業組織 AGS 的成立是為了保護消費者免受欺騙性和錯誤廣告的侵害，並在行業內製定和維護道德標準和實踐。 為了加入 AGS，必須遵循一組特定的要求。 在每年的重新認證考試 ...
Roselle Jewelry® RZ®人造鑽石是獨家的配方合成寶石粉未混合一起, 再經過高壓壓縮後, 使用高反射防熱材質加熱至高溫鎔化合成的原料晶體, 等待冷卻後再經由利用高能超聲波進行化學蒸氣沉積處理處理以令其硬度接近天然鑽石。 經此方法礙結而成的晶體除了硬度更接近鑽石外,外表更有如鑽石一樣璀璨火彩, 更解決了一般方晶鋯石發白, 不夠透亮的問題。 4C的存在. Roselle Jewelry®的RZ®人造鑽石肉眼是完全與天然鑽石100%無差別，以鑽石相等的4C (顏色，切割，對稱，拋光）製作生產。 與坊間的CZ（香港、澳門稱為蘇聯石。 中國大陸稱為高碳鑽，SONA鑽，鍍膜鑽）對比火彩更為突出及更與鑽石像真-一般較差的CZ會以十心十箭或十六心十六箭等切割作為招徠.
- How Are Lab-Created Diamonds Made?
- Lab Grown Diamond Benefits
- What Colors Are available?
Each laboratory-created diamond is grown by placing a diamond ‘seed’ into a chamber of heat and pressure. This chamber mimics the natural growing process. Crystallization occurs allowing the lab-grown diamond to mature within six to ten weeks. It is then cut, polished and graded by the same world-renowned labs that certify earth-mined diamonds. The...
UNMATCHED BEAUTY
Our collection of lab-created diamonds are available up to IF in clarity, D in color, Ideal in cut, and up to 10 carats in size. They come in a variety of shapesincluding round, rose, emerald, cushion, oval, oval rose, heart, princess, trillion, and radiant. Colors include white, yellow, blue, pink, and green.
UNRIVALED QUALITY
Unlike other retailers, every Rooselle Jewelry lab-created diamond is Type IIa, the purest form of diamond. They are harder and more brilliant than Type Ia diamonds. Only 2% of earth-mined diamonds are of this quality. Furthermore, each diamond is graded and certified by the same leading independent gemological labs that are used to grade earth-mined diamonds.
UNBEATABLE VALUE
Lab-created diamonds cost up-to 40% less than their mined diamond equivalents. Buyers beware: keep an eye out for "grown diamonds" sold for a few hundred dollars per carat. If the deal seems too good to be true, it probably is. Only diamond simulantsfall in this price range.
WHITE LAB-CREATED DIAMONDS
A pure carbon diamond with no impurities will grade as a colorless diamond. However, the majority of both mined and lab-created diamonds contain impurities, most of which are nitrogen. The nitrogen atoms within the diamond lattice create the yellow tint. In cases of fancy colored diamonds, a pure yellow color is created. Nearly all diamonds, both mined and lab-created, start out as yellow diamonds. Over the span of millions of years and exposure to pressure and heat, mined diamonds split the...
YELLOW LAB-CREATED DIAMONDS
Roselle Jewelry’s yellow lab-created diamonds are optically, chemically and physically identical to yellow earth-mined diamonds, but are offered free of conflict and on average 10% of the cost. They are available in a color range from fancy yellow to fancy vivid yellow, in sizes up to 2.0 carats and a variety of shapes. Both mined and lab-created yellow diamonds get their color from nitrogen. While diamonds are made up of carbon, impurities within the stone exist. It is the introduction of th...
BLUE LAB-CREATED DIAMONDS
Blue lab-created diamonds are optically, chemically and physically identical to blue earth-mined diamonds and are offered free of conflict and about 10% of the cost. They are typically offered in sizes smaller than 1.50 carats and come in a color range of fancy light blue to fancy intense blue. Both mined and lab-created blue diamonds get their color from boron. While diamonds are made up of carbon, impurities within the stone exist. It is the introduction of these impurities, in this case bo...
美國寶石學院 (GIA) 使用 8 級系統對尖底進行評級，範圍從無到極大。. Abraded Culet a·br a· ded cu· let | ə-ˈbrād kyü-lət noun A chipped or scratched culet In many cases, this abrasion is caused by contact with another diamond. The sharp point at the bottom of the diamond may become damaged and worn away with wear.
2023年3月9日 · 2023年3月9日. 在 新文章 0 comments. 您可能知道 GIA（美國寶石學院）現在發布了其最受歡迎的報告——鑽石檔案——作為其對更環保方法的承諾的一部分，該報告僅以數字形式發布。 它如何影響你？ 自 2023 年 1 月起，Roselle Jewelry 客戶 將不會 獲得分級鑽石的紙質證書。 相反，您會收到一張包含二維碼的 GIA 貼紙，掃描二維碼可以檢索數字證書並驗證詳細信息。 數字證書包含與紙質證書相同的所有信息，但採用易於閱讀的格式，可以從任何設備查看和打印。 這意味著您只需輕鬆點擊幾下，即可隨時隨地訪問您的鑽石檔案。 請注意，此更改僅適用於 GIA 認證的鑽石（克拉範圍為 0.15 至 2.99 克拉）。 IGI 和 HRD 等所有其他實驗室仍提供其證書的紙質副本。
2019年7月19日 · 例如，在美國 ，9K的珠寶不能作為黃金出售。 為了使合金在美國被認為是金，它必須具有至少10K的純度。 價格和可負擔性 9K和18K金之間的純度差異也導致價格差異。 由於9K的珠寶含有較少的金，因此每克便宜 ...
